EXECUTIVE SUMMARY - SR99_140007
INTRODUCTION - SR99_140008
Figure 1. Chart for estimating effective roadbed soil resilient modulus for flexible pavement designed using the serviceability criteria (after AASHTO 1996).
DESCRIPTION OF TEST SOILS
Table 1. Classification properties of test soils.
RESULTS AND DISCUSSION - SR99_140012
Table 3. Test conditions and types of tests.
Table 6. Resilient modulus test results for NH1.
Table 7. Resilient modulus test results for NH2.
Table 7. Resilient modulus test results for NH2. - continued
Table 8a. Resilient modulus test results for NH3.
Table 8a. Resilient modulus test results for NH3. - continued
Table 9. Resilient modulus test results for NH4.
Table 10. Resilient modulus test results for NH5.
Table 11. Average resilient modulus of subgrade soils as a function of temperature.
Figure 6. Effect of freezing and thawing on the resilient modulus of coarse gravelly sand.
Figure 8. Effect of freezing and thawing on the resilient modulus of silty sand.
Figure 10. Typical pavement cross sections used by NHDOT.
Figure 12. Annual temperature at the top of the subgrade (interstate pavement system), Concord, New Hampshire.
Table 12. Estimated mean top of the subgrade temperatures (C) from FROST.
Figure 14. Example of a rapid change of subgrade temperature during thawing.
Table 14a. Effective resilient modulus for NH5 for interstate and secondary pavements.
Table 14c. Effective resilient modulus for NH2 for interstate and secondary pavements.
Table 15. Summary of effective resilient modulus for New Hampshire subgrade soils.
LITERATURE CITED - SR99_140031
APPENDIX A: UNIFORM DENSITY AND MOISTURE CONTENT
Figure A2. Test apparatus for coarse-grained soils.
Figure A4. Extrusion of rings for 71-mm samples.
Figure A6. Removal of individual rings for densitymoisture determination.
APPENDIX A: UNIFORM DENSITY AND MOISTURE CONTENT - continued
APPENDIX B: SAMPLE PREPARATION/TESTING
Figure B2. Specimen at the end of compaction.
Figure B4. Typical AASHTO triaxial chamber with external LVDTs and load cell.
TEST METHOD
TEST METHOD - continued
REPORT DOCUMENTATION PAGE - SR99_140042
SR99_14
INTRODUCTION - SR99_140008
Figure 1. Chart for estimating effective roadbed soil resilient modulus for flexible pavement designed using the serviceability criteria (after AASHTO 1996).
DESCRIPTION OF TEST SOILS
Table 1. Classification properties of test soils.
RESULTS AND DISCUSSION - SR99_140012
Table 3. Test conditions and types of tests.
Table 6. Resilient modulus test results for NH1.
Table 7. Resilient modulus test results for NH2.
Table 7. Resilient modulus test results for NH2. - continued
Table 8a. Resilient modulus test results for NH3.
Table 8a. Resilient modulus test results for NH3. - continued
Table 9. Resilient modulus test results for NH4.
Table 10. Resilient modulus test results for NH5.
Table 11. Average resilient modulus of subgrade soils as a function of temperature.
Figure 6. Effect of freezing and thawing on the resilient modulus of coarse gravelly sand.
Figure 8. Effect of freezing and thawing on the resilient modulus of silty sand.
Figure 10. Typical pavement cross sections used by NHDOT.
Figure 12. Annual temperature at the top of the subgrade (interstate pavement system), Concord, New Hampshire.
Table 12. Estimated mean top of the subgrade temperatures (C) from FROST.
Figure 14. Example of a rapid change of subgrade temperature during thawing.
Table 14a. Effective resilient modulus for NH5 for interstate and secondary pavements.
Table 14c. Effective resilient modulus for NH2 for interstate and secondary pavements.
Table 15. Summary of effective resilient modulus for New Hampshire subgrade soils.
LITERATURE CITED - SR99_140031
APPENDIX A: UNIFORM DENSITY AND MOISTURE CONTENT
Figure A2. Test apparatus for coarse-grained soils.
Figure A4. Extrusion of rings for 71-mm samples.
Figure A6. Removal of individual rings for densitymoisture determination.
APPENDIX A: UNIFORM DENSITY AND MOISTURE CONTENT - continued
APPENDIX B: SAMPLE PREPARATION/TESTING
Figure B2. Specimen at the end of compaction.
Figure B4. Typical AASHTO triaxial chamber with external LVDTs and load cell.
TEST METHOD
TEST METHOD - continued
REPORT DOCUMENTATION PAGE - SR99_140042
SR99_14
